Flush-valve.



W. W. SMITH.

FLUSH VALVE. AmjLIoATIoN FILED mn. 18. 190s.

921,017.- r Patented May11,19o9 4- ,l y i7. 'j

:1.9 my' v @#147, lrwmws' UNITED STATES PATENT onnron.

l l WILLIS W. SMITH, OF ARKANSAS CITY, KANSAS. n

FLUSH-VALvE.

No. 921,017. 'A Specification of Letters Patent. n Patented May 11, 1909. Application ined March 1s, 190s. serial No. 421,893. i

To all 'whom it may concern.' operating lever has a chain or cable 12 con- Beit known that I, WILLIS W. SMiTH, citi-` nected thereto by means of which the same Vzen of the United States, vresiding at Arkancan be drawn downwardly to lift the valve sas City, in the county of Cowley and State of 6 from its seat, and the swinging movement 60 Kansas, have invented vcertain new and use. of the lever is limited by a stop 18 carried by ful Improvements in Flush-Valves, of which; a collar fitted upon the feed pipe. This end the following is a specification. v l of the operating lever is also connected to an The present invention relates to an inil upwardly extending link 14 pendent from proved flush valve embodying novel means the piston rod 15 "of a piston 16 operating 65 l0 for controlling the movements of the valvey within an upright air cylinder 17. In the and timing the same. A present instance this cylinder is shown as The object of the invention is to' provide a carried by collars which are applied to the valve of this character which comprises few` feed pipe 3. A central opening is formed in and simple parts in its construction and op-` the piston 16 and an upwardly opening valve 70 15 erates automaticallyto retard the closing of 18 is applied' to this opening, the said valve the valve until it is nearly seated, when it is being formed with a pendent guide stem 18*rL released so as to drop suddenly upon its seat. which passes through the opening. It will For a full understanding of the invention and thus be apparent that when the piston 16 is the merits thereof and also to acquire a drawn downwardly the valve 18 will be lift- 75 20 knowledge of the details of construction and ed from its 'seat and will permit a free pasthe means for effecting the result, reference is sage of air from the lower end of the cylinder to be had to the following description and acto the upper end thereof. However, upon companying drawings, in which: the upward movement of the piston the Figure 1 is a vertical sectional view through valve 18 is forced upon its seat and the air 80 a flush valve embodying the invention the above the piston must be forced through a same being shown in a closed position. Fig... vent opening in the upper end of the cylin- 2 is a similar view with the valve in an open der, the effective size of the vent opening position. Fig. 3 is a top plan view of the air being controlled by a screw 19. When this cylinder, the screws passing therethrough bescrew has been adjusted to decrease the size 85 ing shown in section. n of the vent opening a comparatively long Corresponding and like parts are referred time will be requiredy for the escape of the air, to in the following description and indicated while in a reverse manner when the effective in all the views of the drawings by the same size ofthe vent has been enlarged the air will reference characters. escape in a comparativelyshort interval of 90 Referring to the drawing, the numeral 41 time.

designates the valve casing which communi- In order to operateV the flush valve it isV cates at its upper end with the lateral branch merely necessary to pull downwardly upon 2 of the feed pipe 3, the lower end of the the cable or chain 12, the valve 6 being valve casing communicating`- at one side thereby lifted from its seat and the piston 16 95 40 thereof with the flush pipe 4. Extending drawn downwardly-within the cylinder 17. transversely across the valve casing 1 is a Upon releasing this cable the flow of water partition or diaphragm 5 formed with a valve through the valve casing 1 tends to force the seat'upon which an upwardly opening valve valve 6 back upon its seat and to move the 6 normally rests, the said valve being held in piston 16 upwardly within the air cylinder. 100 a closed position by the pressure of the water The time required for this upward movement in the supply pipe. of the piston is controlled by the effective Extending downwardly from the valve 6 'size of the vent opening in the cylinder and is a stem 7 which passes through a packing may be regulated as desired. box 8 at the bottom of the valve casing and The invention also contemplates means 105 is loosely connected to one end of an operfor releasing the valve 6 when the same is ating lever 9. This lever is pivotally mountnearly closed so that the same will be suded at an intermediate point upon an arm 10 denly and accurately seated, and for this which is pendent from the lateral branch 2 purpose the lower kedges of the valve 18 are of the supply pipe and has its extremity pivbeveled at 2O and a pin 21 is provided for co- 110 oted to a collar 11 fitted upon the said branch operation with these beveled edges to tilt the of the feed pipe. The opposite end of the valve and open the same at the proper time.

ton brings the valve into Contact therewith.

Having thus described the invention, what is claimed as new is:

l. The combination of a flush valve, a le- .ver pivotally mounted at an intermediate point and having an operative connection at one end thereof with the 'flush valve, an air eylinder having` a vent in the end thereof, a piston mounted within the air Cylinder and having an opening,l therein, connecting` means between the piston and the opposite end of the lever, the said piston cooperating with the lever to retard the closing of the flush valve during a portion of its movement, a valve for the opening in the piston, the edge of the valve being, beveled, and a pin for engaging the beveled edge of the piston valve to tilt the valve at a predetermined time and release the flush valve to permit a sudden seating of the latter.

2. The combination of a 'flush valve, a feed pipe formed with a lateral braneli pipe leading to the flush valve, a swinging' arm pendent from the lateral braneh of tlie supply pipe, an operating' lever pivotally eonneeted between its ends to the swinging arm, one .end of the operating lever being connected to the flush valve, an air cylinder supported by the feed pipe and havingr .a vent in the end thereof, a piston operatingr within the air cylinder and having` an openingT therein, 1

connecting means between the piston and the opposite end of the operating lever, the said piston Cooperating with the lever to retard the closing of the flush-valve during a portion of its movement, a valve for the opening,r in the piston, and means for opening the valve at a predetermined point in the movement of the piston to release the lliisli valve and permit a sudden seatingl thereof.

In testimony whereof l aliix my signature in presence of two witnesses.

WILLS W. Svll'lTl-l. Witnesses Foss FARRAR, W. D. lviAoALLisTnn.

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